121326436 has 96 divisors (see below), whose sum is σ = 278175744. Its totient is φ = 44928000.

The previous prime is 121326431. The next prime is 121326461. The reversal of 121326436 is 634623121.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (121326431) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 926091 + ... + 926221.

It is an arithmetic number, because the mean of its divisors is an integer number (2897664).

Almost surely, 2^121326436 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121326436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139087872).

121326436 is an abundant number, since it is smaller than the sum of its proper divisors (156849308).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121326436 is a wasteful number, since it uses less digits than its factorization.

121326436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281 (or 279 counting only the distinct ones).

The product of its digits is 5184, while the sum is 28.

The square root of 121326436 is about 11014.8280059200. The cubic root of 121326436 is about 495.0531330919.

Adding to 121326436 its reverse (634623121), we get a palindrome (755949557).

The spelling of 121326436 in words is "one hundred twenty-one million, three hundred twenty-six thousand, four hundred thirty-six".